One of the Arab world's most influential contemporary artists is coming to Campbell's Heritage Theatre on Sept. 7. Hamza Namira is an Egyptian singer-songwriter and multi-instrumentalist whose music rose to prominence during the 25 January revolution in 2011, a day of nonviolent protests against increasing police brutality during the last few years of Hosni Mubarak's presidency. Namira participated in the demonstrations and was considered the Voice of the Revolution. His music is marked by sociopolitical themes.